linux-kernel - Re: ext4: initial error at 1288471943: ext4_mb_generate

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Date:	Mon, 13 Dec 2010 23:13:43 +0000
From:	Mathias Burén <mathias.buren@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: Re: ext4: initial error at 1288471943: ext4_mb_generate_buddy:718

On 13 December 2010 23:13, Mathias Burén <mathias.buren@...il.com> wrote:
> Hi, I'm running 2.6.36 and I'm seeing this about once per day in dmesg:
>
> EXT4-fs (dm-0): error count: 1
> EXT4-fs (dm-0): initial error at 1288471943: ext4_mb_generate_buddy:718
> EXT4-fs (dm-0): last error at 1288471943: ext4_mb_generate_buddy:718
>
> uptime && dmesg | grep ' last error at 1288471943' | wc -l
>  23:08:29 up 20 days,  5:46,  1 user,  load average: 0.69, 0.85, 0.83
>
> e2fsprogs 1.41.12-1
> lvm2 2.02.78-1
>
> As you can see it's always the exact same message. I've run fsck on
> the system and no errors were found. dm-0 is the root filesystem, it
> all looks like this:
>
>
> lrwxrwxrwx 1 root root 7 Nov 23 17:22 /dev/mapper/lvmssd-root -> ../dm-0
>
>  --- Volume group ---
>  VG Name               lvmssd
>  System ID
>  Format                lvm2
>  Metadata Areas        1
>  Metadata Sequence No  27
>  VG Access             read/write
>  VG Status             resizable
>  MAX LV                0
>  Cur LV                1
>  Open LV               1
>  Max PV                0
>  Cur PV                1
>  Act PV                1
>  VG Size               53.80 GiB
>  PE Size               4.00 MiB
>  Total PE              13772
>  Alloc PE / Size       13772 / 53.80 GiB
>  Free  PE / Size       0 / 0
>  VG UUID               4jqUcB-jEzl-pKT1-mcPU-soCV-2YXT-cuTk9v
>
> ...
>
>  hdparm -i /dev/sda
>
> /dev/sda:
>
>  Model=Corsair CSSD-F60GB2, FwRev=1.1, SerialNo=10326505580009990027
>  Config={ Fixed }
>  RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
>  BuffType=unknown, BuffSize=unknown, MaxMultSect=16, MultSect=1
>  CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=117231408
>  IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
>  PIO modes:  pio0 pio1 pio2 pio3 pio4
>  DMA modes:  mdma0 mdma1 mdma2
>  UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6
>  AdvancedPM=no WriteCache=enabled
>  Drive conforms to: unknown:  ATA/ATAPI-2,3,4,5,6,7
>
>  * signifies the current active mode
>
> Is this message dangerous? Can I disable it somehow? Why is it showing up? Etc.
>
>
> Thanks,
> // Mathias
>

Oh, and can you please cc me as I'm not subscribed!

// Mathias
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